Drilling gage



FIG. 1 is a right side perspective view of a drilling gage in accordance with the new design;

FIG. 2 is a top elevation view thereof;

FIG. 3 is a left side elevation view thereof;

FIG. 4 is a right side elevation view thereof;

FIG. 5 is a front elevation view thereof; and,

FIG. 6 is a rear elevation view thereof. 

The ornamental design for a drilling gage, as shown and described. 